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Your Firefox cannot be loaded. It may be missing or inaccessible.

  • 2 replies
  • 26 have this problem
  • 1998 views
  • Last reply by cor-el

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I downloaded an add-on and had to restart it. Then it asked me to reset Firefox or to use the safe mode. I chose the safe mode but instead it disabled the add-on. So I reseted the Firefox instead. And since then everytime I open the browser, it gives me a message saying "Your Firefox cannot be loaded. It may be missing or inaccessible." I went through all the forums, but they don't seem to help. They tell me to open it and recreate the profile but I can't even get the browser to open.

All Replies (2)

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System details please? Disable or remove that Ad-don, install addons that you trust. Uninstall the current Mozilla and install the latest one. Make sure 'Mozilla' is removed fully from Appdata > Local - LocalLow - Roaming.

Modified by Wizzy

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Did Firefox move the old profile to the desktop (Old Firefox Data) or is it still in the old location?

Try to create a new profile.

See "Creating a profile":

If the new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.

See:

You can also try to reset Firefox: